This was a problem for our birthday website. Can you use four of these pieces to form a square? How about making a square with all five pieces?

Follow these instructions to make a three-piece and/or seven-piece tangram.

Can you cut up a square in the way shown and make the pieces into a triangle?

Did you know mazes tell stories? Find out more about mazes and make one of your own.

Can you recreate this Indian screen pattern? Can you make up similar patterns of your own?

Reasoning about the number of matches needed to build squares that share their sides.

Have a go at drawing these stars which use six points drawn around a circle. Perhaps you can create your own designs?

Paint a stripe on a cardboard roll. Can you predict what will happen when it is rolled across a sheet of paper?

It's hard to make a snowflake with six perfect lines of symmetry, but it's fun to try!

Can you cut a regular hexagon into two pieces to make a parallelogram? Try cutting it into three pieces to make a rhombus!

How can you make a curve from straight strips of paper?

Follow these instructions to make a five-pointed snowflake from a square of paper.

Exploring and predicting folding, cutting and punching holes and making spirals.

Make a mobius band and investigate its properties.

Using these kite and dart templates, you could try to recreate part of Penrose's famous tessellation or design one yourself.

This is a simple paper-folding activity that gives an intriguing result which you can then investigate further.

Looking at the picture of this Jomista Mat, can you decribe what you see? Why not try and make one yourself?

Make a cube out of straws and have a go at this practical challenge.

Follow the diagrams to make this patchwork piece, based on an octagon in a square.

Arrange your fences to make the largest rectangular space you can. Try with four fences, then five, then six etc.

This practical problem challenges you to make quadrilaterals with a loop of string. You'll need some friends to help!

Have a look at what happens when you pull a reef knot and a granny knot tight. Which do you think is best for securing things together? Why?

This problem invites you to build 3D shapes using two different triangles. Can you make the shapes from the pictures?

Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.

Where can you put the mirror across the square so that you can still "see" the whole square? How many different positions are possible?

What are the next three numbers in this sequence? Can you explain why are they called pyramid numbers?

Can you work out what shape is made by folding in this way? Why not create some patterns using this shape but in different sizes?

Make a flower design using the same shape made out of different sizes of paper.

Can you visualise what shape this piece of paper will make when it is folded?

For this task, you'll need an A4 sheet and two A5 transparent sheets. Decide on a way of arranging the A5 sheets on top of the A4 sheet and explore ...

You have been given three shapes made out of sponge: a sphere, a cylinder and a cone. Your challenge is to find out how to cut them to make different shapes for printing.

Can you make the most extraordinary, the most amazing, the most unusual patterns/designs from these triangles which are made in a special way?

What shape is made when you fold using this crease pattern? Can you make a ring design?

Can you make the birds from the egg tangram?

What happens to the area of a square if you double the length of the sides? Try the same thing with rectangles, diamonds and other shapes. How do the four smaller ones fit into the larger one?

Have you noticed that triangles are used in manmade structures? Perhaps there is a good reason for this? 'Test a Triangle' and see how rigid triangles are.

In how many ways can you fit two of these yellow triangles together? Can you predict the number of ways two blue triangles can be fitted together?

How many differently shaped rectangles can you build using these equilateral and isosceles triangles? Can you make a square?

Ideas for practical ways of representing data such as Venn and Carroll diagrams.

In this article for primary teachers, Fran describes her passion for paper folding as a springboard for mathematics.

Can you predict when you'll be clapping and when you'll be clicking if you start this rhythm? How about when a friend begins a new rhythm at the same time?

What is the greatest number of squares you can make by overlapping three squares?

Make a cube with three strips of paper. Colour three faces or use the numbers 1 to 6 to make a die.

Arrange your fences to make the largest rectangular space you can. Try with four fences, then five, then six etc.

Watch the video to see how to fold a square of paper to create a flower. What fraction of the piece of paper is the small triangle?

Cut a square of paper into three pieces as shown. Now,can you use the 3 pieces to make a large triangle, a parallelogram and the square again?

This practical investigation invites you to make tessellating shapes in a similar way to the artist Escher.